1616611564105 has 8 divisors (see below), whose sum is σ = 1940007816072. Its totient is φ = 1293239958528.

The previous prime is 1616611564093. The next prime is 1616611564111. The reversal of 1616611564105 is 5014651166161.

It can be written as a sum of positive squares in 4 ways, for example, as 621000737296 + 995610826809 = 788036^2 + 997803^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1616611564105 - 2¹¹ = 1616611562057 is a prime.

It is a super-2 number, since 2×1616611564105² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6016984 + ... + 6279913.

It is an arithmetic number, because the mean of its divisors is an integer number (242500977009).

Almost surely, 2^{1616611564105} is an apocalyptic number.

It is an amenable number.

1616611564105 is a deficient number, since it is larger than the sum of its proper divisors (323396251967).

1616611564105 is a wasteful number, since it uses less digits than its factorization.

1616611564105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12323195.

The product of its (nonzero) digits is 129600, while the sum is 43.

The spelling of 1616611564105 in words is "one trillion, six hundred sixteen billion, six hundred eleven million, five hundred sixty-four thousand, one hundred five".